Antique Opal and Diamond Brooch Silver Upon Gold Circa 1900

An antique opal and diamond brooch, with a claw set buff top cut opal, with predominantly red play of colour, mounted in gold, with silver claws, with four groups of three old-cut diamonds, with a total weight of approximately 0.95ct, mounted in silver-upon-gold, millegrain edged, rub over settings, with a loop to convert to a pendant, circa 1900. With a scratched invoice number 1027 10278 NBL.